First, it belongs to the digestive system, since it's also called the large intestine. Sorry, but I don't know what else it belongs to .
I hope this helps somewhat
Yes, all ecosystems need to have a top predator (quaternary consumers) so that the cycle of the food chain can stay complete.
If the temperature is warm, then the rate of chemical weathering will be harsher, why is chemical weathering affected by temperature?
Excuse me sorry but it does not show your question. do you think you could post your question again?